There will be plenty of celebrities in Chicago this weekend due to Lollapalooza, but likely none bigger than Lady Gaga.

The pop mega star with nearly 28 million Twitter followers had dinner at Girl and the Goat in the West Loop late Friday night. I hear Gaga – who is rumored to be dating “Chicago Fire” actor Taylor Kinney -- pulled up with her group in two SUVs.

Gaga attended Pitchfork music festival in Union Park last month. She headlined Lollapalooza in 2010.

Chappelle’s shows: You know it’s a crazy weekend in Chicago when Dave Chappelle is performing here and you had no idea. The former “Chappelle Show” star, who was spotted at The Shrine Friday before heading to The Underground, will perform two shows at the House of Blues Sunday.

About today:Avicii will DJ at Paris Club’s upstairs club, Studio Paris, following his Lollapalooza set. … Calvin Harris will DJ at The Mid after his Lollapalooza set. … Dougy Mandagi, lead singer of The Temper Trap, and Chris Kennedy (better known as actor Chris Masterson) will DJ at Nellcote. … Starkillers and The White Panda will perform at the Filter magazine party at Roof in the Wit hotel.

Hungry like the wolf: Joe Manganiello had lunch at Hub 51 Friday before taking in the Die Antwoord show at Lollapalooza. The “True Blood” and “Magic Mike” actor had dinner at RPM Italian later that night and then hung out at Hub 51’s lower level club, Sub 51.

Sightings: Alison Brie (“Community”) and rumored boyfriend Dave Franco (“21 Jump Street”) dined at Hub 51 Friday. … Aaron Paul (“Breaking Bad”) dined at Nellcote Thursday. … Rose McGowan (“Scream”), Josh Henderson (“Dallas”), Michael Pena (“Crash”) and singer Ryan Cabrera all were on hand for Wyclef Jean’s performance Friday at the Underground. … I saw Paul, Henderson, Pena, Cabrera and Jenny McCarthy (“Singled Out”) walking around the CK One Music Lounge in the Hard Rock hotel Friday (Paul picked up a cell phone from the Motorolla gift suite). “American Idol” alum Haley Reinhart performed at the CK One-sponsored Rock the Vote Nights party at the Hard Rock later that night and hung out in the VIP lounge with friends afterward. … I also saw Lollapalooza founder Perry Farrell leaving Paris Club Friday after his dinner with his wife. … Members of the indie rock band Passion Pit dined at N9NE Steakhouse Thursday before their show at the House of Blues. … Singer Frankie J dined at Dragon Ranch Moonshine & BBQ Friday and partied at Studio Paris.

And just like that, there’s only one day left of Lolla. Here’s what stood out to us from day 2. Best: The Tallest Man on Earth: Maybe it was just a right-mood, right-set situation, but boy this was the perfect mid-day act to take a breather, sit in the sun, and just chill and listen to and enjoy....

One day down! Here’s the best and worst we saw at Lolla on Friday, plus a few superlatives from day 1. Best: Anyone who knows me knows I was bound to pick Paul McCartney as my favorite act of the day. The Beatle came out and gave it his all with more than two hours of hits, tributes and jokes about...

What can you really say about Sir Paul McCartney, the former Beatle, pop music pioneer, worldwide cultural icon, and all-around great guy, that hasn't already been said? I mean, seriously. With the Beatles changing music for the better, becoming a pop culture institution and being "more popular...

Chicago's ban on plastic bags starts to take effect at many big stores Saturday, but an alderman who helped craft the law already is talking about changing it in order to thwart a few large retail chains that he says are trying to skirt the new rules.